{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:V3ANQWMLQKITHHMNPE2JPXROMC","short_pith_number":"pith:V3ANQWML","canonical_record":{"source":{"id":"1603.01223","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-03-03T18:59:29Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"ea44b02ab7731a1790e3adc9cded0b1a46af0e7fa65fae4a31cbaf5cc4aa5203","abstract_canon_sha256":"419c43862d062c936c95c42eff3da585389bcbcb00100decd65953567b232ab9"},"schema_version":"1.0"},"canonical_sha256":"aec0d8598b8291339d8d793497de2e6090469796b9b2879fc1c402c855c06435","source":{"kind":"arxiv","id":"1603.01223","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.01223","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"arxiv_version","alias_value":"1603.01223v4","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.01223","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"pith_short_12","alias_value":"V3ANQWMLQKIT","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V3ANQWMLQKITHHMN","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V3ANQWML","created_at":"2026-05-18T12:30:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:V3ANQWMLQKITHHMNPE2JPXROMC","target":"record","payload":{"canonical_record":{"source":{"id":"1603.01223","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-03-03T18:59:29Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"ea44b02ab7731a1790e3adc9cded0b1a46af0e7fa65fae4a31cbaf5cc4aa5203","abstract_canon_sha256":"419c43862d062c936c95c42eff3da585389bcbcb00100decd65953567b232ab9"},"schema_version":"1.0"},"canonical_sha256":"aec0d8598b8291339d8d793497de2e6090469796b9b2879fc1c402c855c06435","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:06.629261Z","signature_b64":"CC/sb1jWKeRqWlWm9V+6c7NU4p+R1rjGHvBKyjgERrjItxAXNk6W6eOgOGhYTpsbwv6crcGaMONYL3kc15XoAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aec0d8598b8291339d8d793497de2e6090469796b9b2879fc1c402c855c06435","last_reissued_at":"2026-05-18T01:10:06.628760Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:06.628760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1603.01223","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V63Bwgak2dwxpxQo5+fwRXPRLutWdkgzx5HPIInHfkK3pkLtJCSXep4lmBLycn2808FPkAS/qLD4Muhq0OkkDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:20:48.967391Z"},"content_sha256":"d1269c9a3abdf31bfeaf7c1adf66b84cb7f597eb14d3c714569de3c8be734763","schema_version":"1.0","event_id":"sha256:d1269c9a3abdf31bfeaf7c1adf66b84cb7f597eb14d3c714569de3c8be734763"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:V3ANQWMLQKITHHMNPE2JPXROMC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SPAMCART: a code for smoothed particle Monte Carlo radiative transfer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.IM","authors_text":"A. P. Whitworth, O. Lomax","submitted_at":"2016-03-03T18:59:29Z","abstract_excerpt":"We present a code for generating synthetic SEDs and intensity maps from Smoothed Particle Hydrodynamics simulation snapshots. The code is based on the Lucy (1999) Monte Carlo Radiative Transfer method, i.e. it follows discrete luminosity packets, emitted from external and/or embedded sources, as they propagate through a density field, and then uses their trajectories to compute the radiative equilibrium temperature of the ambient dust. The density is not mapped onto a grid, and therefore the calculation is performed at exactly the same resolution as the hydrodynamics. We present two example ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.01223","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:10:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QyTCqdjv250HhN00GU/t4SwRponYxaNLzONJePwvPP4/U39yQW8lj39ixDpLfjtskiT1nqvQ8v++aRGp9fFmBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:20:48.967744Z"},"content_sha256":"5ccfab0d0072adab45fd6b9529668588341b5e62e925590208784b04211c4f1e","schema_version":"1.0","event_id":"sha256:5ccfab0d0072adab45fd6b9529668588341b5e62e925590208784b04211c4f1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V3ANQWMLQKITHHMNPE2JPXROMC/bundle.json","state_url":"https://pith.science/pith/V3ANQWMLQKITHHMNPE2JPXROMC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V3ANQWMLQKITHHMNPE2JPXROMC/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T11:20:48Z","links":{"resolver":"https://pith.science/pith/V3ANQWMLQKITHHMNPE2JPXROMC","bundle":"https://pith.science/pith/V3ANQWMLQKITHHMNPE2JPXROMC/bundle.json","state":"https://pith.science/pith/V3ANQWMLQKITHHMNPE2JPXROMC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V3ANQWMLQKITHHMNPE2JPXROMC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:V3ANQWMLQKITHHMNPE2JPXROMC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"419c43862d062c936c95c42eff3da585389bcbcb00100decd65953567b232ab9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-03-03T18:59:29Z","title_canon_sha256":"ea44b02ab7731a1790e3adc9cded0b1a46af0e7fa65fae4a31cbaf5cc4aa5203"},"schema_version":"1.0","source":{"id":"1603.01223","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.01223","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"arxiv_version","alias_value":"1603.01223v4","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.01223","created_at":"2026-05-18T01:10:06Z"},{"alias_kind":"pith_short_12","alias_value":"V3ANQWMLQKIT","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_16","alias_value":"V3ANQWMLQKITHHMN","created_at":"2026-05-18T12:30:46Z"},{"alias_kind":"pith_short_8","alias_value":"V3ANQWML","created_at":"2026-05-18T12:30:46Z"}],"graph_snapshots":[{"event_id":"sha256:5ccfab0d0072adab45fd6b9529668588341b5e62e925590208784b04211c4f1e","target":"graph","created_at":"2026-05-18T01:10:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present a code for generating synthetic SEDs and intensity maps from Smoothed Particle Hydrodynamics simulation snapshots. The code is based on the Lucy (1999) Monte Carlo Radiative Transfer method, i.e. it follows discrete luminosity packets, emitted from external and/or embedded sources, as they propagate through a density field, and then uses their trajectories to compute the radiative equilibrium temperature of the ambient dust. The density is not mapped onto a grid, and therefore the calculation is performed at exactly the same resolution as the hydrodynamics. We present two example ca","authors_text":"A. P. Whitworth, O. Lomax","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-03-03T18:59:29Z","title":"SPAMCART: a code for smoothed particle Monte Carlo radiative transfer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.01223","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d1269c9a3abdf31bfeaf7c1adf66b84cb7f597eb14d3c714569de3c8be734763","target":"record","created_at":"2026-05-18T01:10:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"419c43862d062c936c95c42eff3da585389bcbcb00100decd65953567b232ab9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2016-03-03T18:59:29Z","title_canon_sha256":"ea44b02ab7731a1790e3adc9cded0b1a46af0e7fa65fae4a31cbaf5cc4aa5203"},"schema_version":"1.0","source":{"id":"1603.01223","kind":"arxiv","version":4}},"canonical_sha256":"aec0d8598b8291339d8d793497de2e6090469796b9b2879fc1c402c855c06435","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aec0d8598b8291339d8d793497de2e6090469796b9b2879fc1c402c855c06435","first_computed_at":"2026-05-18T01:10:06.628760Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:06.628760Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CC/sb1jWKeRqWlWm9V+6c7NU4p+R1rjGHvBKyjgERrjItxAXNk6W6eOgOGhYTpsbwv6crcGaMONYL3kc15XoAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:06.629261Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.01223","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d1269c9a3abdf31bfeaf7c1adf66b84cb7f597eb14d3c714569de3c8be734763","sha256:5ccfab0d0072adab45fd6b9529668588341b5e62e925590208784b04211c4f1e"],"state_sha256":"111dd909aa688263b101547fdf1ced3a1aa3eea606ad6b929493ae7072693999"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"43m0RN7Qr1RRAdVjlhRlbEWUE+Zm4Yldu4FxpunD8xEnC/FqiHCetL0gcYyASy7bdJUVyjKHn7wcWTVK8sfyDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:20:48.970111Z","bundle_sha256":"f64502dfa8d0890c7e0c56f5d6d034e4b51b4760e4fc5d225d7b2e723e5b3e90"}}